Finding the Third Proportional to 42,707.25 and 67,880.53

Step by Step Solution

1. Step 1: Write the proportion equation
   42,707.25 : 67,880.53 = 67,880.53 : x
2. Step 2: Convert to fraction form
   42,707.25/67,880.53 = 67,880.53/x
3. Step 3: Cross multiply
   42,707.25x = 67,880.53 × 67,880.53
4. Step 4: Simplify right side
   42,707.25x = 4,607,766,522.78
5. Step 5: Solve for x
   x = 4,607,766,522.78/42,707.25
6. Step 6: Final answer
   x = 107,891.90